Time-indicator.



W. M. J EFFREYS & W. H. GREAHEN.

TIME INDICATOR. APPLIOATION FILED MAX 17. 1912.

' Patented Mar. 9

2 sums-sum 1.

ZZZ/ t fireakez W. M. JEPFREYS & W. H. GREAHEN.-

TIME INDIGATGR.

APPLICATION FILED MAY 17, 1912.

Patented Mar. 9

w 3 w Rd. .W m s I I r 7 M A w NW 0. 1%

of dial disks,

WILLIAM M. JEFFREYS AND-WILLIAM H. CREAHEN,

ORS 0F ONE-HALF T0 HARRY OHIO.

Specification of Letters Patent.

OF YOUNGSTOWN, OHIO, ASSIGN- Patented Mar. 9, 1915.

Application filed ma 17, 19 2. Serial No. 697,984.

To all whom it may concern Be it known that we, WILLIAM M. JEF- CREAHEN, citizens of the United States, residing at Youngs town, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Time-Indicators, of

which the following is a specification.

Our invention relates to new and useful improvements 1n tune indicators and more particularly to electrical time indicators,

and the object of our invention'is to construct an indicator which may be actuated by a current in circuit with the indicator and with a clock arranged to intermittently open and close the circuit.

A further object of our invention is to provide a time indicator having a plurality upon which are printed the hours and minutes, or the hours, minutes and seconds, these disks being so positioned and arranged as to, at all times, give the same reading as the master clock. And a still further object of our invention is to provide an electro-magnet, andmeans operable by the energizing of the magnet for revolving one of the disks, the other disk or disks being driven by the magnet operated disk.

With these and other objects in view, our invention will be more fully described, illustrated in the accompanying drawings, and then specifically pointed'out in the claim which is attached to and forms a part of this application.

In the drawings: Figure 1 is a front elevation of the indicator mechanism, the casing being shown in section; F ig. 2 is a top plan view of the same-the casing being shown in section; Fig. 3 is a view similar to Fig. 1, but showing a somewhat modified form of construction; Fig. 4 is a fragmentary plan view of the mechanism shown in this'figure also being shown .in section.

Corresponding and like parts are -referred to in the. following description and.

indicated in all the views of the drawings by the same reference characters.

- The preferred embodiment of our invention includes a dial disk for indicating. the

seconds, another dialdisk for indicating-the minutes, and a third dial disk for in'dicatin the hours, all of-these disks bemg mounted for rotation in asuitable casing and actu -minal 26 adapted for teeth of the ratchet ated primarily by an electro-magnet which is 1nterm1ttently energized through a circult controlled by a master clock.

eferrlngmore particularly to the draw? mgs,'1O designates the casing, including, a base 11, and a faceplate 12 provided with almed openings 13, 1% and 15. This casing may be constructed of wood or metal as preferred and of suitable size, the size depending upon the size of the dial disks, which of course, must be large enough to carry the numerals or factors which, togetherindicate the time.

Secured to the inner face of the base 11, 1s a U-shaped bracket 16 having upwardly directed, spaced apart arms 17 and journale'd in these arms intermediate their length, is a transversely extending shaft 18 .upon which is mounted a dial disk 19, prefthe disk will successively display the numorals through the opening-15. The ratchet wheel 20 is provided with sixty equally spaced teeth 21, each tooth corresponding to one of the numerals of the disk.

w. KERR AND DENNIS r. MURRAY, or YOUNGSTOWN, v

TIME-INDICATOR.

' Extending from the rear wall of the casing, is a-bracket 22 carrying an electro-magnet 23 having a vertically movable armature 24 normally supported in spaced relationbelow its poles. Pivoted in the center of this armature, is an arm 25, the free end of which is'formed with a hooked terengagement with the preferably maintained in engagement with the ratchet wheel by a light leaf spring 27. The armature of theimagnet is supported at such a distance below the magnet that itsupward movement is equal to the wheel, this arm being pitch of the ratchet gear 20. It will there fore-be apparent that each time the magnet is energized, the-dial disk 19' will be rotated to bring the next numeral the opening 15 of the casing.

into view through In order to prevent counterrotation of the shaft 18, we have provided the upper terminal of the rear-arm .17 of the bracket ,16 with an inwardly directedpivot pin or stud at its upper end, upon w oted a pawl 28 which engages with the teeth of the ratchet wheel. Secured to the central portion of the base of the casing, is a bracket 29 havin spaced 19 arms 30 between which is journaled a shaft 31 carryinga second dial disk 32, this dial disk being positioned upon the shaft to lie immediately at the rear of the dial disk 19. This second dial disk constitutes the minute indicating mechanism of the device, and is consequently. provided about its peripheral edge portion with numerals runmng from zero-zero .to fifty-nine in the same manner as the numerals behind the seconds disk, said disk 32 being so mounted as to display its numerals throughthe opening .14 of the casing, which opening is positioned immediately to the left of the opening 15. g

As a means for actuating the dial disk 32, we have provided a-ratchet gear 33 which is ,keyed upon the shaft 31 immediately in ad- Vance o the disk 32, in the same plane with the disk 19 and substantially tangential 0 thereto. This ratchet gear 33 is provided with sixty spaced teeth 34, each corresponding to a numeral upon the dial disk 32 and is actuated by a single tooth 35 formed upon the peripheral edge of the dial disk 19 in 35 such a position as to engage 59 of the dial disk 19 asses the opening 15. The dial disk 32 islield against counterrotation by a pawl 36 pivoted upon a stud o 37 extending rom the forward arm of the bracket 29.

bas'ell and a shaft 39 journaledbetween the arms 40 of thiszbracket carries a third dial disk 41 which lies in a plane with the dial 19 and the peri heral edge portion of which is provide with numerals from 1 to 12 indicating the hours, this disk being sopositioned as tov display the nu- 5o' merals through theopening 13 immediately to the left of the opening 14. This latter dial disk is actuate by v secured upon the shaft 39 and having twelve teeth 43 correspondin to the numerals upon the disk.

in the same lane with the dial disk 32 and tangentia thereto and is actuated by a single tooth 44 formed upon the peripheral edge of the dial disk. 32 at 'such a point as 7 so to engage with one of the teeth of thethe numeral 59 "of the 32 moves away from ratchet car 42 as dial 1 ing 14. -A

pin 46 which-extends inwardlg rear arm of the bracket 40 an I from the. above; the

hich is piv-. 'eration of our 7 opening while the with a tooth of the ratchet wheel 33 when the numeral.

a ratchet gear 42;

This rate et gear 42 lies e re awl'45 18 mounted upon a pivot shaft 39. This pawl engages the teeth of the ratchet gear 42 to prevent counter-rotation of the gear.

From the foregoing description, the optime indicating device will be readily understood. The device above described is intended to be actuated and controlled by a clock electrically connected in circuit with the magnet 23 and arranged. to close the circuit once each second. Upon each energization of the magnet, the shaft 18 and consequentlythe dial disk 19 is ro-. tated to approximately an angle of six degrees to bring the next seconds numeral into osition behind the opening 15, the device ein set in such a manner that the numeral isplayed behindthis opening corresponds to the position of the second han of the clock.

, As-will be readily seen during each complete revolution ofthe dial disk 19, its tooth 35 will engage the ratchet gear the dial disk. 32. to substantially six degrees to bring the next numeral of said disk into position beneath the opening 14. In. like 90 manner, each complete revolution of the dial disk 32 will revolve the dial disk 41 to an angle of substantially 30 degrees to bring its next numeral into position behind the 13. It will of course be'und erstood that the dial disk 32 is originally set; to cor-t respond with the minute hand of the clock,

, dial disk 41 is set to correspond with the hour hand.

For the sake of illustrating the operation of the indicator as clearly as-possible, we have shown-the same with the dials in the osition occupied one second before two, the tooth 35 of the second disk being just on the point of turning the minute disk, while the 105 i tooth ofthe minute disk is about to turn the Still another bracket 38 is secured to the hour disk, the next'reading'of course being two hours and no minutes and seconds. QIn Figs. 3 .and 4, we have illustrated a slightly modified form of indicating mechanism adapted for. indicating the hours and minutes only. In this instance, the minute a disk 50 is mounted upon the shatt51 in the usual manner and is provided with a plu-a rality of spaced apart, .rconcentrically arranged pins'52 forming a crown gea'r,-the teeth of which are engaged -.b the hooked terminal 53 of the arm 54 pivoted to the armature 55 of the electro-magne't 56. The shaft 51 in this instance is preferably journaled between the front and rear walls bf an inner casing 57, the sides of wh-ich'are pivot pins-58' and 59, theformer of whr carries a pawli60 for engagement with the teeth 52 ofthe crown'gear. The lio'urdisk in. this latter-instance is done away with, the

fnumerals being applied directly ouponthe ratchet'gear 61 which is formed with ahub 62. supported between setscrewstl threaded 1 34 to turn ends of the minute dial -59 and is held against counter-rotation tical wlth 'tremely simple and efiective form through the opposite sides-of the casing 57 and enfgaging in conical bores formed in the the hub. This gear is actuated by a tooth 64 formed upon the peripheral edge 50 adiacent the numeral y a' pawl 65 pivoted upon the pivot pin 59. The operation of this modified that of the preferred form with the exception that the electro-magnet is, of course, energized but once each minute.

From the foregoing description, it will be apparent that we have provided an exof electrically actuated time indicator, and that any number of these indicators may he actuated or governed by a single clock positioned at any distance from the indicators Having thus described-the invention, what is claimed as new is:

An electric time indicator including an eleotromagnet, a plurality of U-shaped form is iden &

brackets, shafts extending between the arms of each of said brackets and at points intermediate the length thereof, a plurality of dial disks mounted upon the said shafts, means operable by the magnet for intermittently rotatin one of the said disks, means operable by the movement of said disk for intermittently rotating the second disk, and meansfor holding each or said disks against oounter-rotation-, said last-mentioned means consistingof a pawl pivoted to the arm of each of said bracket members above the shaft thereof and engageable with the disk or" the said shaft. 9

In testimony whereof we afix our signatures in presence of two witnesses.

wrLLrai/i M. anrrnnrs. [n 5.] WILLIAM H. cesarean. [n a] Witnesses:

H. A, Enns'r, H. W. Sims. 

